BUS BAR

A bus bar (1) includes members (9) made from a conductive material and consecutively arranged to form a plate shape defining a wiring pathway (7). The members (9) adjacent to each other have connection surfaces (21, 23, 25, 27, 31, 33) at which the members (9) adjacent to each other are connected to each other by laser joining. The members (9) adjacent to each other include at least one tolerance buffer (29) between the members (9) adjacent to each other. In the at least one tolerance buffer (29), the connection surfaces (21, 23, 25, 27, 31, 33) of the members (9) adjacent to each other have different widths.